Unit of frequency is ______

Options

A. Hertz
B. dB
C. Newton
D. Pascal

Answer

To answer the question "Unit of frequency is ______", we can follow these steps:

### Step 1: Understand the Concept of Frequency
- Frequency refers to the number of oscillations or cycles that occur in a given time period, specifically per second.

### Step 2: Identify the SI Unit of Frequency
- The standard unit of measurement for frequency in the International System of Units (SI) is Hertz (Hz).

### Step 3: Clarify the Definition of Hertz
- Hertz is named after Heinrich Hertz, a scientist who made significant contributions to the study of electromagnetic waves. One Hertz is defined as one cycle per second.

### Step 4: Eliminate Other Units
- Other units mentioned, such as decibel (dB), Newton (N), and Pascal (Pa), are not related to frequency:
- Decibel (dB) measures sound intensity.
- Newton (N) measures force.
- Pascal (Pa) measures pressure.

### Final Answer
- Therefore, the unit of frequency is **Hertz (Hz)**.

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